3-4
3.3 Connect to the Gas Supply
A. High-pressure O
2
supply connector B. High-pressure O
2
supply hose and fitting
C. Low-pressure O
2
supply connector D. Low-pressure O
2
supply hose
This ventilator provides two types of gas supply connection: high-pressure O
2
and
low-pressure O
2
.
When the ventilator is connected to high-pressure O
2
supply, the normal working gas supply
pressure is 280~600KPa. If gas supply pressure is less than 280KPa, it will compromise the
performance of the ventilator and even stop ventilation. If gas supply pressure is within
600~1000KPa, it will compromise the performance of the ventilator but will not cause any
hazard due to high-pressure gas. Connect the high-pressure O
2
supply as follows:
1. Check if the sealing ring at the gas supply connection is in good condition before
connecting the gas supply hose. If the sealing ring is damaged, do not use the hose.
Replace the sealing ring to prevent leakage.
2. Align the connector with and insert it into the inlet of high-pressure O
2
supply at the rear
of the ventilator.
3. Ensure that the gas supply hose is properly connected to the gas supply inlet. Tighten the
hose nut by hand.
When the ventilator is connected to low-pressure O
2
supply, the flow of low-pressure O
2
supply cannot exceed 15 L/min. To reduce the risk of fire, do not use a low-pressure O
2
supply that delivers a flow greater than 15 L/min. To connect the low-pressure O
2
supply,
align the low-pressure O
2
supply hose with and insert it into the low-pressure O
2
supply
connector. When a click is heard, it indicates that the gas supply hose is inserted in place.
Depress the metal dome on the low-pressure O
2
supply connector to remove the gas supply
hose.
B
A
D
C
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